IIRC, the Lee Web page has updated the record about which primers are ok to work with. They now appear to single out FEDERAL exclusively:

Nor do you have to conclude Federal primers are more powerful. Checks clearly show Federal rifle and pistol primers have with regards to the same Power as other makes.

For anyone who is, they propose that you reduce your powder demand, place collectively some check rounds and check for pressure indications about the primer/brass prior to deciding to load up a complete box/batch.

Again to the concern. The Federal primers use a special priming compound than CCI and Winchester. It truly is my comprehension this priming compound is much easier to ignite than CCI and Earn. As outlined by assessments it won't manage to make any difference in either precision or firing when there fired.

Pierce examined a bunch of primers with distinctive powders and recorded the final results that he referred to as blended. Choice of powder and primer mixtures.

Is the listing of your model of instances and primer just producing their analyzed loads as accurately represented as they may be to ensure that the reloader to reproduce their results?

I assume if I'd to select a brand name ... it would be Winchester. They feed just great in my Dillon RL550 Whilst CCIs Never. The skirts on CCI primers are merely rough more than enough exactly where they do not favor automated primer feeders and jam. Once i load on my one phase RCBS Rockchucker, it isn't going to make A lot big difference.

"Supplied suitable penetration, a larger diameter bullet may have an edge in wounding success. It is going to damage a blood vessel the smaller projectile barely misses.

Primers also have quite insignificant variances in diameter producing seating resistances apparent - diameter Proportions change under .001 but even this small volume may be observed on seating. My previous primer seating chore indicated that WLR primers took noticeably less effort to seat than CCI 200's.

Testing 16 primer varieties was an enormous job — we commend Laurie for his effort and thoroughness. This extensive check is a crucial contribution on the “expertise base” of precision shooting.

Until that you are loading to your max pressures to your cartridge you could interchange all of the LP primers at will. Until you are a excellent expert focus on shooter, you probably is not going to discover any accuracy discrepancies.

This is often an more mature thread, you federal large rifle benchrest primers might not receive a reaction, and will be reviving an outdated thread. Be sure to look at developing a new thread.

I suspect they have a slight influence, but that’s hunch not science! One (minimal) explanation that small primer brass could be much better than lots of regular LR types is it usually noticeably simpler to seat SR primers also to get good ‘really feel’ on their own contacting the pocket ground.

Should the velocity variation is lower than five%, then don't worry about this. For ball-park estimates, a five% velocity variance corresponds to aprox.a 10% stress change. At something less than absolute maximum masses that isn't substantial, and is also regularly near usual variation for a load.